Base Minimum Capital requirement mandates profile-based deposits for brokers and trading members to address operational trading risks. SEBI realigns Base Minimum Capital requirements for stock brokers and trading members by prescribing profile-based BMC deposit levels distinguishing proprietary trading, client-only trading, mixed activity, and algorithmic trading. BMC is newly required for derivative trading members; deposits are non-additive across segments and reduced to forty percent for exchanges without nation-wide terminals. No exposure shall be granted against BMC; at least fifty percent must be cash or cash equivalents. Exchanges must amend bye-laws, notify members, report implementation, and may prescribe higher deposits based on risk perception.